1 //===-- AsmPrinter.cpp - Common AsmPrinter code ---------------------------===//
3 // The LLVM Compiler Infrastructure
5 // This file is distributed under the University of Illinois Open Source
6 // License. See LICENSE.TXT for details.
8 //===----------------------------------------------------------------------===//
10 // This file implements the AsmPrinter class.
12 //===----------------------------------------------------------------------===//
14 #include "llvm/CodeGen/AsmPrinter.h"
15 #include "llvm/Assembly/Writer.h"
16 #include "llvm/DerivedTypes.h"
17 #include "llvm/Constants.h"
18 #include "llvm/Module.h"
19 #include "llvm/CodeGen/Collector.h"
20 #include "llvm/CodeGen/CollectorMetadata.h"
21 #include "llvm/CodeGen/MachineConstantPool.h"
22 #include "llvm/CodeGen/MachineJumpTableInfo.h"
23 #include "llvm/CodeGen/MachineModuleInfo.h"
24 #include "llvm/Support/CommandLine.h"
25 #include "llvm/Support/Mangler.h"
26 #include "llvm/Support/MathExtras.h"
27 #include "llvm/Support/Streams.h"
28 #include "llvm/Target/TargetAsmInfo.h"
29 #include "llvm/Target/TargetData.h"
30 #include "llvm/Target/TargetLowering.h"
31 #include "llvm/Target/TargetMachine.h"
32 #include "llvm/Target/TargetRegisterInfo.h"
33 #include "llvm/ADT/SmallPtrSet.h"
38 AsmVerbose("asm-verbose", cl::Hidden, cl::desc("Add comments to directives."));
40 char AsmPrinter::ID = 0;
41 AsmPrinter::AsmPrinter(std::ostream &o, TargetMachine &tm,
42 const TargetAsmInfo *T)
43 : MachineFunctionPass((intptr_t)&ID), FunctionNumber(0), O(o),
44 TM(tm), TAI(T), TRI(tm.getRegisterInfo()),
45 IsInTextSection(false)
48 std::string AsmPrinter::getSectionForFunction(const Function &F) const {
49 return TAI->getTextSection();
53 /// SwitchToTextSection - Switch to the specified text section of the executable
54 /// if we are not already in it!
56 void AsmPrinter::SwitchToTextSection(const char *NewSection,
57 const GlobalValue *GV) {
59 if (GV && GV->hasSection())
60 NS = TAI->getSwitchToSectionDirective() + GV->getSection();
64 // If we're already in this section, we're done.
65 if (CurrentSection == NS) return;
67 // Close the current section, if applicable.
68 if (TAI->getSectionEndDirectiveSuffix() && !CurrentSection.empty())
69 O << CurrentSection << TAI->getSectionEndDirectiveSuffix() << "\n";
73 if (!CurrentSection.empty())
74 O << CurrentSection << TAI->getTextSectionStartSuffix() << '\n';
76 IsInTextSection = true;
79 /// SwitchToDataSection - Switch to the specified data section of the executable
80 /// if we are not already in it!
82 void AsmPrinter::SwitchToDataSection(const char *NewSection,
83 const GlobalValue *GV) {
85 if (GV && GV->hasSection())
86 NS = TAI->getSwitchToSectionDirective() + GV->getSection();
90 // If we're already in this section, we're done.
91 if (CurrentSection == NS) return;
93 // Close the current section, if applicable.
94 if (TAI->getSectionEndDirectiveSuffix() && !CurrentSection.empty())
95 O << CurrentSection << TAI->getSectionEndDirectiveSuffix() << "\n";
99 if (!CurrentSection.empty())
100 O << CurrentSection << TAI->getDataSectionStartSuffix() << '\n';
102 IsInTextSection = false;
106 void AsmPrinter::getAnalysisUsage(AnalysisUsage &AU) const {
107 MachineFunctionPass::getAnalysisUsage(AU);
108 AU.addRequired<CollectorModuleMetadata>();
111 bool AsmPrinter::doInitialization(Module &M) {
112 Mang = new Mangler(M, TAI->getGlobalPrefix());
114 CollectorModuleMetadata *CMM = getAnalysisToUpdate<CollectorModuleMetadata>();
115 assert(CMM && "AsmPrinter didn't require CollectorModuleMetadata?");
116 for (CollectorModuleMetadata::iterator I = CMM->begin(),
117 E = CMM->end(); I != E; ++I)
118 (*I)->beginAssembly(O, *this, *TAI);
120 if (!M.getModuleInlineAsm().empty())
121 O << TAI->getCommentString() << " Start of file scope inline assembly\n"
122 << M.getModuleInlineAsm()
123 << "\n" << TAI->getCommentString()
124 << " End of file scope inline assembly\n";
126 SwitchToDataSection(""); // Reset back to no section.
128 MMI = getAnalysisToUpdate<MachineModuleInfo>();
129 if (MMI) MMI->AnalyzeModule(M);
134 bool AsmPrinter::doFinalization(Module &M) {
135 if (TAI->getWeakRefDirective()) {
136 if (!ExtWeakSymbols.empty())
137 SwitchToDataSection("");
139 for (std::set<const GlobalValue*>::iterator i = ExtWeakSymbols.begin(),
140 e = ExtWeakSymbols.end(); i != e; ++i) {
141 const GlobalValue *GV = *i;
142 std::string Name = Mang->getValueName(GV);
143 O << TAI->getWeakRefDirective() << Name << "\n";
147 if (TAI->getSetDirective()) {
148 if (!M.alias_empty())
149 SwitchToTextSection(TAI->getTextSection());
152 for (Module::const_alias_iterator I = M.alias_begin(), E = M.alias_end();
154 std::string Name = Mang->getValueName(I);
157 const GlobalValue *GV = cast<GlobalValue>(I->getAliasedGlobal());
158 Target = Mang->getValueName(GV);
160 if (I->hasExternalLinkage() || !TAI->getWeakRefDirective())
161 O << "\t.globl\t" << Name << "\n";
162 else if (I->hasWeakLinkage())
163 O << TAI->getWeakRefDirective() << Name << "\n";
164 else if (!I->hasInternalLinkage())
165 assert(0 && "Invalid alias linkage");
167 if (I->hasHiddenVisibility()) {
168 if (const char *Directive = TAI->getHiddenDirective())
169 O << Directive << Name << "\n";
170 } else if (I->hasProtectedVisibility()) {
171 if (const char *Directive = TAI->getProtectedDirective())
172 O << Directive << Name << "\n";
175 O << TAI->getSetDirective() << ' ' << Name << ", " << Target << "\n";
177 // If the aliasee has external weak linkage it can be referenced only by
178 // alias itself. In this case it can be not in ExtWeakSymbols list. Emit
179 // weak reference in such case.
180 if (GV->hasExternalWeakLinkage()) {
181 if (TAI->getWeakRefDirective())
182 O << TAI->getWeakRefDirective() << Target << "\n";
184 O << "\t.globl\t" << Target << "\n";
189 CollectorModuleMetadata *CMM = getAnalysisToUpdate<CollectorModuleMetadata>();
190 assert(CMM && "AsmPrinter didn't require CollectorModuleMetadata?");
191 for (CollectorModuleMetadata::iterator I = CMM->end(),
192 E = CMM->begin(); I != E; )
193 (*--I)->finishAssembly(O, *this, *TAI);
195 delete Mang; Mang = 0;
199 std::string AsmPrinter::getCurrentFunctionEHName(const MachineFunction *MF) {
200 assert(MF && "No machine function?");
201 std::string Name = MF->getFunction()->getName();
203 Name = Mang->getValueName(MF->getFunction());
204 return Mang->makeNameProper(Name + ".eh", TAI->getGlobalPrefix());
207 void AsmPrinter::SetupMachineFunction(MachineFunction &MF) {
208 // What's my mangled name?
209 CurrentFnName = Mang->getValueName(MF.getFunction());
210 IncrementFunctionNumber();
213 /// EmitConstantPool - Print to the current output stream assembly
214 /// representations of the constants in the constant pool MCP. This is
215 /// used to print out constants which have been "spilled to memory" by
216 /// the code generator.
218 void AsmPrinter::EmitConstantPool(MachineConstantPool *MCP) {
219 const std::vector<MachineConstantPoolEntry> &CP = MCP->getConstants();
220 if (CP.empty()) return;
222 // Some targets require 4-, 8-, and 16- byte constant literals to be placed
223 // in special sections.
224 std::vector<std::pair<MachineConstantPoolEntry,unsigned> > FourByteCPs;
225 std::vector<std::pair<MachineConstantPoolEntry,unsigned> > EightByteCPs;
226 std::vector<std::pair<MachineConstantPoolEntry,unsigned> > SixteenByteCPs;
227 std::vector<std::pair<MachineConstantPoolEntry,unsigned> > OtherCPs;
228 std::vector<std::pair<MachineConstantPoolEntry,unsigned> > TargetCPs;
229 for (unsigned i = 0, e = CP.size(); i != e; ++i) {
230 MachineConstantPoolEntry CPE = CP[i];
231 const Type *Ty = CPE.getType();
232 if (TAI->getFourByteConstantSection() &&
233 TM.getTargetData()->getABITypeSize(Ty) == 4)
234 FourByteCPs.push_back(std::make_pair(CPE, i));
235 else if (TAI->getEightByteConstantSection() &&
236 TM.getTargetData()->getABITypeSize(Ty) == 8)
237 EightByteCPs.push_back(std::make_pair(CPE, i));
238 else if (TAI->getSixteenByteConstantSection() &&
239 TM.getTargetData()->getABITypeSize(Ty) == 16)
240 SixteenByteCPs.push_back(std::make_pair(CPE, i));
242 OtherCPs.push_back(std::make_pair(CPE, i));
245 unsigned Alignment = MCP->getConstantPoolAlignment();
246 EmitConstantPool(Alignment, TAI->getFourByteConstantSection(), FourByteCPs);
247 EmitConstantPool(Alignment, TAI->getEightByteConstantSection(), EightByteCPs);
248 EmitConstantPool(Alignment, TAI->getSixteenByteConstantSection(),
250 EmitConstantPool(Alignment, TAI->getConstantPoolSection(), OtherCPs);
253 void AsmPrinter::EmitConstantPool(unsigned Alignment, const char *Section,
254 std::vector<std::pair<MachineConstantPoolEntry,unsigned> > &CP) {
255 if (CP.empty()) return;
257 SwitchToDataSection(Section);
258 EmitAlignment(Alignment);
259 for (unsigned i = 0, e = CP.size(); i != e; ++i) {
260 O << TAI->getPrivateGlobalPrefix() << "CPI" << getFunctionNumber() << '_'
261 << CP[i].second << ":\t\t\t\t\t" << TAI->getCommentString() << " ";
262 WriteTypeSymbolic(O, CP[i].first.getType(), 0) << '\n';
263 if (CP[i].first.isMachineConstantPoolEntry())
264 EmitMachineConstantPoolValue(CP[i].first.Val.MachineCPVal);
266 EmitGlobalConstant(CP[i].first.Val.ConstVal);
268 const Type *Ty = CP[i].first.getType();
270 TM.getTargetData()->getABITypeSize(Ty);
271 unsigned ValEnd = CP[i].first.getOffset() + EntSize;
272 // Emit inter-object padding for alignment.
273 EmitZeros(CP[i+1].first.getOffset()-ValEnd);
278 /// EmitJumpTableInfo - Print assembly representations of the jump tables used
279 /// by the current function to the current output stream.
281 void AsmPrinter::EmitJumpTableInfo(MachineJumpTableInfo *MJTI,
282 MachineFunction &MF) {
283 const std::vector<MachineJumpTableEntry> &JT = MJTI->getJumpTables();
284 if (JT.empty()) return;
286 bool IsPic = TM.getRelocationModel() == Reloc::PIC_;
288 // Pick the directive to use to print the jump table entries, and switch to
289 // the appropriate section.
290 TargetLowering *LoweringInfo = TM.getTargetLowering();
292 const char* JumpTableDataSection = TAI->getJumpTableDataSection();
293 if ((IsPic && !(LoweringInfo && LoweringInfo->usesGlobalOffsetTable())) ||
294 !JumpTableDataSection) {
295 // In PIC mode, we need to emit the jump table to the same section as the
296 // function body itself, otherwise the label differences won't make sense.
297 // We should also do if the section name is NULL.
298 const Function *F = MF.getFunction();
299 SwitchToTextSection(getSectionForFunction(*F).c_str(), F);
301 SwitchToDataSection(JumpTableDataSection);
304 EmitAlignment(Log2_32(MJTI->getAlignment()));
306 for (unsigned i = 0, e = JT.size(); i != e; ++i) {
307 const std::vector<MachineBasicBlock*> &JTBBs = JT[i].MBBs;
309 // If this jump table was deleted, ignore it.
310 if (JTBBs.empty()) continue;
312 // For PIC codegen, if possible we want to use the SetDirective to reduce
313 // the number of relocations the assembler will generate for the jump table.
314 // Set directives are all printed before the jump table itself.
315 SmallPtrSet<MachineBasicBlock*, 16> EmittedSets;
316 if (TAI->getSetDirective() && IsPic)
317 for (unsigned ii = 0, ee = JTBBs.size(); ii != ee; ++ii)
318 if (EmittedSets.insert(JTBBs[ii]))
319 printPICJumpTableSetLabel(i, JTBBs[ii]);
321 // On some targets (e.g. darwin) we want to emit two consequtive labels
322 // before each jump table. The first label is never referenced, but tells
323 // the assembler and linker the extents of the jump table object. The
324 // second label is actually referenced by the code.
325 if (const char *JTLabelPrefix = TAI->getJumpTableSpecialLabelPrefix())
326 O << JTLabelPrefix << "JTI" << getFunctionNumber() << '_' << i << ":\n";
328 O << TAI->getPrivateGlobalPrefix() << "JTI" << getFunctionNumber()
329 << '_' << i << ":\n";
331 for (unsigned ii = 0, ee = JTBBs.size(); ii != ee; ++ii) {
332 printPICJumpTableEntry(MJTI, JTBBs[ii], i);
338 void AsmPrinter::printPICJumpTableEntry(const MachineJumpTableInfo *MJTI,
339 const MachineBasicBlock *MBB,
340 unsigned uid) const {
341 bool IsPic = TM.getRelocationModel() == Reloc::PIC_;
343 // Use JumpTableDirective otherwise honor the entry size from the jump table
345 const char *JTEntryDirective = TAI->getJumpTableDirective();
346 bool HadJTEntryDirective = JTEntryDirective != NULL;
347 if (!HadJTEntryDirective) {
348 JTEntryDirective = MJTI->getEntrySize() == 4 ?
349 TAI->getData32bitsDirective() : TAI->getData64bitsDirective();
352 O << JTEntryDirective << ' ';
354 // If we have emitted set directives for the jump table entries, print
355 // them rather than the entries themselves. If we're emitting PIC, then
356 // emit the table entries as differences between two text section labels.
357 // If we're emitting non-PIC code, then emit the entries as direct
358 // references to the target basic blocks.
360 if (TAI->getSetDirective()) {
361 O << TAI->getPrivateGlobalPrefix() << getFunctionNumber()
362 << '_' << uid << "_set_" << MBB->getNumber();
364 printBasicBlockLabel(MBB, false, false, false);
365 // If the arch uses custom Jump Table directives, don't calc relative to
367 if (!HadJTEntryDirective)
368 O << '-' << TAI->getPrivateGlobalPrefix() << "JTI"
369 << getFunctionNumber() << '_' << uid;
372 printBasicBlockLabel(MBB, false, false, false);
377 /// EmitSpecialLLVMGlobal - Check to see if the specified global is a
378 /// special global used by LLVM. If so, emit it and return true, otherwise
379 /// do nothing and return false.
380 bool AsmPrinter::EmitSpecialLLVMGlobal(const GlobalVariable *GV) {
381 if (GV->getName() == "llvm.used") {
382 if (TAI->getUsedDirective() != 0) // No need to emit this at all.
383 EmitLLVMUsedList(GV->getInitializer());
387 // Ignore debug and non-emitted data.
388 if (GV->getSection() == "llvm.metadata") return true;
390 if (!GV->hasAppendingLinkage()) return false;
392 assert(GV->hasInitializer() && "Not a special LLVM global!");
394 const TargetData *TD = TM.getTargetData();
395 unsigned Align = Log2_32(TD->getPointerPrefAlignment());
396 if (GV->getName() == "llvm.global_ctors" && GV->use_empty()) {
397 SwitchToDataSection(TAI->getStaticCtorsSection());
398 EmitAlignment(Align, 0);
399 EmitXXStructorList(GV->getInitializer());
403 if (GV->getName() == "llvm.global_dtors" && GV->use_empty()) {
404 SwitchToDataSection(TAI->getStaticDtorsSection());
405 EmitAlignment(Align, 0);
406 EmitXXStructorList(GV->getInitializer());
413 /// EmitLLVMUsedList - For targets that define a TAI::UsedDirective, mark each
414 /// global in the specified llvm.used list as being used with this directive.
415 void AsmPrinter::EmitLLVMUsedList(Constant *List) {
416 const char *Directive = TAI->getUsedDirective();
418 // Should be an array of 'sbyte*'.
419 ConstantArray *InitList = dyn_cast<ConstantArray>(List);
420 if (InitList == 0) return;
422 for (unsigned i = 0, e = InitList->getNumOperands(); i != e; ++i) {
424 EmitConstantValueOnly(InitList->getOperand(i));
429 /// EmitXXStructorList - Emit the ctor or dtor list. This just prints out the
430 /// function pointers, ignoring the init priority.
431 void AsmPrinter::EmitXXStructorList(Constant *List) {
432 // Should be an array of '{ int, void ()* }' structs. The first value is the
433 // init priority, which we ignore.
434 if (!isa<ConstantArray>(List)) return;
435 ConstantArray *InitList = cast<ConstantArray>(List);
436 for (unsigned i = 0, e = InitList->getNumOperands(); i != e; ++i)
437 if (ConstantStruct *CS = dyn_cast<ConstantStruct>(InitList->getOperand(i))){
438 if (CS->getNumOperands() != 2) return; // Not array of 2-element structs.
440 if (CS->getOperand(1)->isNullValue())
441 return; // Found a null terminator, exit printing.
442 // Emit the function pointer.
443 EmitGlobalConstant(CS->getOperand(1));
447 /// getGlobalLinkName - Returns the asm/link name of of the specified
448 /// global variable. Should be overridden by each target asm printer to
449 /// generate the appropriate value.
450 const std::string AsmPrinter::getGlobalLinkName(const GlobalVariable *GV) const{
451 std::string LinkName;
453 if (isa<Function>(GV)) {
454 LinkName += TAI->getFunctionAddrPrefix();
455 LinkName += Mang->getValueName(GV);
456 LinkName += TAI->getFunctionAddrSuffix();
458 LinkName += TAI->getGlobalVarAddrPrefix();
459 LinkName += Mang->getValueName(GV);
460 LinkName += TAI->getGlobalVarAddrSuffix();
466 /// EmitExternalGlobal - Emit the external reference to a global variable.
467 /// Should be overridden if an indirect reference should be used.
468 void AsmPrinter::EmitExternalGlobal(const GlobalVariable *GV) {
469 O << getGlobalLinkName(GV);
474 //===----------------------------------------------------------------------===//
475 /// LEB 128 number encoding.
477 /// PrintULEB128 - Print a series of hexidecimal values (separated by commas)
478 /// representing an unsigned leb128 value.
479 void AsmPrinter::PrintULEB128(unsigned Value) const {
481 unsigned Byte = Value & 0x7f;
483 if (Value) Byte |= 0x80;
484 O << "0x" << std::hex << Byte << std::dec;
485 if (Value) O << ", ";
489 /// SizeULEB128 - Compute the number of bytes required for an unsigned leb128
491 unsigned AsmPrinter::SizeULEB128(unsigned Value) {
495 Size += sizeof(int8_t);
500 /// PrintSLEB128 - Print a series of hexidecimal values (separated by commas)
501 /// representing a signed leb128 value.
502 void AsmPrinter::PrintSLEB128(int Value) const {
503 int Sign = Value >> (8 * sizeof(Value) - 1);
507 unsigned Byte = Value & 0x7f;
509 IsMore = Value != Sign || ((Byte ^ Sign) & 0x40) != 0;
510 if (IsMore) Byte |= 0x80;
511 O << "0x" << std::hex << Byte << std::dec;
512 if (IsMore) O << ", ";
516 /// SizeSLEB128 - Compute the number of bytes required for a signed leb128
518 unsigned AsmPrinter::SizeSLEB128(int Value) {
520 int Sign = Value >> (8 * sizeof(Value) - 1);
524 unsigned Byte = Value & 0x7f;
526 IsMore = Value != Sign || ((Byte ^ Sign) & 0x40) != 0;
527 Size += sizeof(int8_t);
532 //===--------------------------------------------------------------------===//
533 // Emission and print routines
536 /// PrintHex - Print a value as a hexidecimal value.
538 void AsmPrinter::PrintHex(int Value) const {
539 O << "0x" << std::hex << Value << std::dec;
542 /// EOL - Print a newline character to asm stream. If a comment is present
543 /// then it will be printed first. Comments should not contain '\n'.
544 void AsmPrinter::EOL() const {
547 void AsmPrinter::EOL(const std::string &Comment) const {
548 if (AsmVerbose && !Comment.empty()) {
550 << TAI->getCommentString()
557 /// EmitULEB128Bytes - Emit an assembler byte data directive to compose an
558 /// unsigned leb128 value.
559 void AsmPrinter::EmitULEB128Bytes(unsigned Value) const {
560 if (TAI->hasLEB128()) {
564 O << TAI->getData8bitsDirective();
569 /// EmitSLEB128Bytes - print an assembler byte data directive to compose a
570 /// signed leb128 value.
571 void AsmPrinter::EmitSLEB128Bytes(int Value) const {
572 if (TAI->hasLEB128()) {
576 O << TAI->getData8bitsDirective();
581 /// EmitInt8 - Emit a byte directive and value.
583 void AsmPrinter::EmitInt8(int Value) const {
584 O << TAI->getData8bitsDirective();
585 PrintHex(Value & 0xFF);
588 /// EmitInt16 - Emit a short directive and value.
590 void AsmPrinter::EmitInt16(int Value) const {
591 O << TAI->getData16bitsDirective();
592 PrintHex(Value & 0xFFFF);
595 /// EmitInt32 - Emit a long directive and value.
597 void AsmPrinter::EmitInt32(int Value) const {
598 O << TAI->getData32bitsDirective();
602 /// EmitInt64 - Emit a long long directive and value.
604 void AsmPrinter::EmitInt64(uint64_t Value) const {
605 if (TAI->getData64bitsDirective()) {
606 O << TAI->getData64bitsDirective();
609 if (TM.getTargetData()->isBigEndian()) {
610 EmitInt32(unsigned(Value >> 32)); O << "\n";
611 EmitInt32(unsigned(Value));
613 EmitInt32(unsigned(Value)); O << "\n";
614 EmitInt32(unsigned(Value >> 32));
619 /// toOctal - Convert the low order bits of X into an octal digit.
621 static inline char toOctal(int X) {
625 /// printStringChar - Print a char, escaped if necessary.
627 static void printStringChar(std::ostream &O, unsigned char C) {
630 } else if (C == '\\') {
632 } else if (isprint(C)) {
636 case '\b': O << "\\b"; break;
637 case '\f': O << "\\f"; break;
638 case '\n': O << "\\n"; break;
639 case '\r': O << "\\r"; break;
640 case '\t': O << "\\t"; break;
643 O << toOctal(C >> 6);
644 O << toOctal(C >> 3);
645 O << toOctal(C >> 0);
651 /// EmitString - Emit a string with quotes and a null terminator.
652 /// Special characters are emitted properly.
653 /// \literal (Eg. '\t') \endliteral
654 void AsmPrinter::EmitString(const std::string &String) const {
655 const char* AscizDirective = TAI->getAscizDirective();
659 O << TAI->getAsciiDirective();
661 for (unsigned i = 0, N = String.size(); i < N; ++i) {
662 unsigned char C = String[i];
663 printStringChar(O, C);
672 /// EmitFile - Emit a .file directive.
673 void AsmPrinter::EmitFile(unsigned Number, const std::string &Name) const {
674 O << "\t.file\t" << Number << " \"";
675 for (unsigned i = 0, N = Name.size(); i < N; ++i) {
676 unsigned char C = Name[i];
677 printStringChar(O, C);
683 //===----------------------------------------------------------------------===//
685 // EmitAlignment - Emit an alignment directive to the specified power of
686 // two boundary. For example, if you pass in 3 here, you will get an 8
687 // byte alignment. If a global value is specified, and if that global has
688 // an explicit alignment requested, it will unconditionally override the
689 // alignment request. However, if ForcedAlignBits is specified, this value
690 // has final say: the ultimate alignment will be the max of ForcedAlignBits
691 // and the alignment computed with NumBits and the global.
695 // if (GV && GV->hasalignment) Align = GV->getalignment();
696 // Align = std::max(Align, ForcedAlignBits);
698 void AsmPrinter::EmitAlignment(unsigned NumBits, const GlobalValue *GV,
699 unsigned ForcedAlignBits,
700 bool UseFillExpr) const {
701 if (GV && GV->getAlignment())
702 NumBits = Log2_32(GV->getAlignment());
703 NumBits = std::max(NumBits, ForcedAlignBits);
705 if (NumBits == 0) return; // No need to emit alignment.
706 if (TAI->getAlignmentIsInBytes()) NumBits = 1 << NumBits;
707 O << TAI->getAlignDirective() << NumBits;
709 unsigned FillValue = TAI->getTextAlignFillValue();
710 UseFillExpr &= IsInTextSection && FillValue;
711 if (UseFillExpr) O << ",0x" << std::hex << FillValue << std::dec;
716 /// EmitZeros - Emit a block of zeros.
718 void AsmPrinter::EmitZeros(uint64_t NumZeros) const {
720 if (TAI->getZeroDirective()) {
721 O << TAI->getZeroDirective() << NumZeros;
722 if (TAI->getZeroDirectiveSuffix())
723 O << TAI->getZeroDirectiveSuffix();
726 for (; NumZeros; --NumZeros)
727 O << TAI->getData8bitsDirective() << "0\n";
732 // Print out the specified constant, without a storage class. Only the
733 // constants valid in constant expressions can occur here.
734 void AsmPrinter::EmitConstantValueOnly(const Constant *CV) {
735 if (CV->isNullValue() || isa<UndefValue>(CV))
737 else if (const ConstantInt *CI = dyn_cast<ConstantInt>(CV)) {
738 O << CI->getZExtValue();
739 } else if (const GlobalValue *GV = dyn_cast<GlobalValue>(CV)) {
740 // This is a constant address for a global variable or function. Use the
741 // name of the variable or function as the address value, possibly
742 // decorating it with GlobalVarAddrPrefix/Suffix or
743 // FunctionAddrPrefix/Suffix (these all default to "" )
744 if (isa<Function>(GV)) {
745 O << TAI->getFunctionAddrPrefix()
746 << Mang->getValueName(GV)
747 << TAI->getFunctionAddrSuffix();
749 O << TAI->getGlobalVarAddrPrefix()
750 << Mang->getValueName(GV)
751 << TAI->getGlobalVarAddrSuffix();
753 } else if (const ConstantExpr *CE = dyn_cast<ConstantExpr>(CV)) {
754 const TargetData *TD = TM.getTargetData();
755 unsigned Opcode = CE->getOpcode();
757 case Instruction::GetElementPtr: {
758 // generate a symbolic expression for the byte address
759 const Constant *ptrVal = CE->getOperand(0);
760 SmallVector<Value*, 8> idxVec(CE->op_begin()+1, CE->op_end());
761 if (int64_t Offset = TD->getIndexedOffset(ptrVal->getType(), &idxVec[0],
765 EmitConstantValueOnly(ptrVal);
767 O << ") + " << Offset;
769 O << ") - " << -Offset;
771 EmitConstantValueOnly(ptrVal);
775 case Instruction::Trunc:
776 case Instruction::ZExt:
777 case Instruction::SExt:
778 case Instruction::FPTrunc:
779 case Instruction::FPExt:
780 case Instruction::UIToFP:
781 case Instruction::SIToFP:
782 case Instruction::FPToUI:
783 case Instruction::FPToSI:
784 assert(0 && "FIXME: Don't yet support this kind of constant cast expr");
786 case Instruction::BitCast:
787 return EmitConstantValueOnly(CE->getOperand(0));
789 case Instruction::IntToPtr: {
790 // Handle casts to pointers by changing them into casts to the appropriate
791 // integer type. This promotes constant folding and simplifies this code.
792 Constant *Op = CE->getOperand(0);
793 Op = ConstantExpr::getIntegerCast(Op, TD->getIntPtrType(), false/*ZExt*/);
794 return EmitConstantValueOnly(Op);
798 case Instruction::PtrToInt: {
799 // Support only foldable casts to/from pointers that can be eliminated by
800 // changing the pointer to the appropriately sized integer type.
801 Constant *Op = CE->getOperand(0);
802 const Type *Ty = CE->getType();
804 // We can emit the pointer value into this slot if the slot is an
805 // integer slot greater or equal to the size of the pointer.
806 if (Ty->isInteger() &&
807 TD->getABITypeSize(Ty) >= TD->getABITypeSize(Op->getType()))
808 return EmitConstantValueOnly(Op);
810 assert(0 && "FIXME: Don't yet support this kind of constant cast expr");
811 EmitConstantValueOnly(Op);
814 case Instruction::Add:
815 case Instruction::Sub:
816 case Instruction::And:
817 case Instruction::Or:
818 case Instruction::Xor:
820 EmitConstantValueOnly(CE->getOperand(0));
823 case Instruction::Add:
826 case Instruction::Sub:
829 case Instruction::And:
832 case Instruction::Or:
835 case Instruction::Xor:
842 EmitConstantValueOnly(CE->getOperand(1));
846 assert(0 && "Unsupported operator!");
849 assert(0 && "Unknown constant value!");
853 /// printAsCString - Print the specified array as a C compatible string, only if
854 /// the predicate isString is true.
856 static void printAsCString(std::ostream &O, const ConstantArray *CVA,
858 assert(CVA->isString() && "Array is not string compatible!");
861 for (unsigned i = 0; i != LastElt; ++i) {
863 (unsigned char)cast<ConstantInt>(CVA->getOperand(i))->getZExtValue();
864 printStringChar(O, C);
869 /// EmitString - Emit a zero-byte-terminated string constant.
871 void AsmPrinter::EmitString(const ConstantArray *CVA) const {
872 unsigned NumElts = CVA->getNumOperands();
873 if (TAI->getAscizDirective() && NumElts &&
874 cast<ConstantInt>(CVA->getOperand(NumElts-1))->getZExtValue() == 0) {
875 O << TAI->getAscizDirective();
876 printAsCString(O, CVA, NumElts-1);
878 O << TAI->getAsciiDirective();
879 printAsCString(O, CVA, NumElts);
884 /// EmitGlobalConstant - Print a general LLVM constant to the .s file.
885 /// If Packed is false, pad to the ABI size.
886 void AsmPrinter::EmitGlobalConstant(const Constant *CV, bool Packed) {
887 const TargetData *TD = TM.getTargetData();
888 unsigned Size = Packed ?
889 TD->getTypeStoreSize(CV->getType()) : TD->getABITypeSize(CV->getType());
891 if (CV->isNullValue() || isa<UndefValue>(CV)) {
894 } else if (const ConstantArray *CVA = dyn_cast<ConstantArray>(CV)) {
895 if (CVA->isString()) {
897 } else { // Not a string. Print the values in successive locations
898 for (unsigned i = 0, e = CVA->getNumOperands(); i != e; ++i)
899 EmitGlobalConstant(CVA->getOperand(i), false);
902 } else if (const ConstantStruct *CVS = dyn_cast<ConstantStruct>(CV)) {
903 // Print the fields in successive locations. Pad to align if needed!
904 const StructLayout *cvsLayout = TD->getStructLayout(CVS->getType());
905 uint64_t sizeSoFar = 0;
906 for (unsigned i = 0, e = CVS->getNumOperands(); i != e; ++i) {
907 const Constant* field = CVS->getOperand(i);
909 // Check if padding is needed and insert one or more 0s.
910 uint64_t fieldSize = TD->getTypeStoreSize(field->getType());
911 uint64_t padSize = ((i == e-1 ? Size : cvsLayout->getElementOffset(i+1))
912 - cvsLayout->getElementOffset(i)) - fieldSize;
913 sizeSoFar += fieldSize + padSize;
915 // Now print the actual field value without ABI size padding.
916 EmitGlobalConstant(field, true);
918 // Insert padding - this may include padding to increase the size of the
919 // current field up to the ABI size (if the struct is not packed) as well
920 // as padding to ensure that the next field starts at the right offset.
923 assert(sizeSoFar == cvsLayout->getSizeInBytes() &&
924 "Layout of constant struct may be incorrect!");
926 } else if (const ConstantFP *CFP = dyn_cast<ConstantFP>(CV)) {
927 // FP Constants are printed as integer constants to avoid losing
929 if (CFP->getType() == Type::DoubleTy) {
930 double Val = CFP->getValueAPF().convertToDouble(); // for comment only
931 uint64_t i = CFP->getValueAPF().convertToAPInt().getZExtValue();
932 if (TAI->getData64bitsDirective())
933 O << TAI->getData64bitsDirective() << i << "\t"
934 << TAI->getCommentString() << " double value: " << Val << "\n";
935 else if (TD->isBigEndian()) {
936 O << TAI->getData32bitsDirective() << unsigned(i >> 32)
937 << "\t" << TAI->getCommentString()
938 << " double most significant word " << Val << "\n";
939 O << TAI->getData32bitsDirective() << unsigned(i)
940 << "\t" << TAI->getCommentString()
941 << " double least significant word " << Val << "\n";
943 O << TAI->getData32bitsDirective() << unsigned(i)
944 << "\t" << TAI->getCommentString()
945 << " double least significant word " << Val << "\n";
946 O << TAI->getData32bitsDirective() << unsigned(i >> 32)
947 << "\t" << TAI->getCommentString()
948 << " double most significant word " << Val << "\n";
951 } else if (CFP->getType() == Type::FloatTy) {
952 float Val = CFP->getValueAPF().convertToFloat(); // for comment only
953 O << TAI->getData32bitsDirective()
954 << CFP->getValueAPF().convertToAPInt().getZExtValue()
955 << "\t" << TAI->getCommentString() << " float " << Val << "\n";
957 } else if (CFP->getType() == Type::X86_FP80Ty) {
958 // all long double variants are printed as hex
959 // api needed to prevent premature destruction
960 APInt api = CFP->getValueAPF().convertToAPInt();
961 const uint64_t *p = api.getRawData();
962 APFloat DoubleVal = CFP->getValueAPF();
963 DoubleVal.convert(APFloat::IEEEdouble, APFloat::rmNearestTiesToEven);
964 if (TD->isBigEndian()) {
965 O << TAI->getData16bitsDirective() << uint16_t(p[0] >> 48)
966 << "\t" << TAI->getCommentString()
967 << " long double most significant halfword of ~"
968 << DoubleVal.convertToDouble() << "\n";
969 O << TAI->getData16bitsDirective() << uint16_t(p[0] >> 32)
970 << "\t" << TAI->getCommentString()
971 << " long double next halfword\n";
972 O << TAI->getData16bitsDirective() << uint16_t(p[0] >> 16)
973 << "\t" << TAI->getCommentString()
974 << " long double next halfword\n";
975 O << TAI->getData16bitsDirective() << uint16_t(p[0])
976 << "\t" << TAI->getCommentString()
977 << " long double next halfword\n";
978 O << TAI->getData16bitsDirective() << uint16_t(p[1])
979 << "\t" << TAI->getCommentString()
980 << " long double least significant halfword\n";
982 O << TAI->getData16bitsDirective() << uint16_t(p[1])
983 << "\t" << TAI->getCommentString()
984 << " long double least significant halfword of ~"
985 << DoubleVal.convertToDouble() << "\n";
986 O << TAI->getData16bitsDirective() << uint16_t(p[0])
987 << "\t" << TAI->getCommentString()
988 << " long double next halfword\n";
989 O << TAI->getData16bitsDirective() << uint16_t(p[0] >> 16)
990 << "\t" << TAI->getCommentString()
991 << " long double next halfword\n";
992 O << TAI->getData16bitsDirective() << uint16_t(p[0] >> 32)
993 << "\t" << TAI->getCommentString()
994 << " long double next halfword\n";
995 O << TAI->getData16bitsDirective() << uint16_t(p[0] >> 48)
996 << "\t" << TAI->getCommentString()
997 << " long double most significant halfword\n";
999 EmitZeros(Size - TD->getTypeStoreSize(Type::X86_FP80Ty));
1001 } else if (CFP->getType() == Type::PPC_FP128Ty) {
1002 // all long double variants are printed as hex
1003 // api needed to prevent premature destruction
1004 APInt api = CFP->getValueAPF().convertToAPInt();
1005 const uint64_t *p = api.getRawData();
1006 if (TD->isBigEndian()) {
1007 O << TAI->getData32bitsDirective() << uint32_t(p[0] >> 32)
1008 << "\t" << TAI->getCommentString()
1009 << " long double most significant word\n";
1010 O << TAI->getData32bitsDirective() << uint32_t(p[0])
1011 << "\t" << TAI->getCommentString()
1012 << " long double next word\n";
1013 O << TAI->getData32bitsDirective() << uint32_t(p[1] >> 32)
1014 << "\t" << TAI->getCommentString()
1015 << " long double next word\n";
1016 O << TAI->getData32bitsDirective() << uint32_t(p[1])
1017 << "\t" << TAI->getCommentString()
1018 << " long double least significant word\n";
1020 O << TAI->getData32bitsDirective() << uint32_t(p[1])
1021 << "\t" << TAI->getCommentString()
1022 << " long double least significant word\n";
1023 O << TAI->getData32bitsDirective() << uint32_t(p[1] >> 32)
1024 << "\t" << TAI->getCommentString()
1025 << " long double next word\n";
1026 O << TAI->getData32bitsDirective() << uint32_t(p[0])
1027 << "\t" << TAI->getCommentString()
1028 << " long double next word\n";
1029 O << TAI->getData32bitsDirective() << uint32_t(p[0] >> 32)
1030 << "\t" << TAI->getCommentString()
1031 << " long double most significant word\n";
1034 } else assert(0 && "Floating point constant type not handled");
1035 } else if (CV->getType() == Type::Int64Ty) {
1036 if (const ConstantInt *CI = dyn_cast<ConstantInt>(CV)) {
1037 uint64_t Val = CI->getZExtValue();
1039 if (TAI->getData64bitsDirective())
1040 O << TAI->getData64bitsDirective() << Val << "\n";
1041 else if (TD->isBigEndian()) {
1042 O << TAI->getData32bitsDirective() << unsigned(Val >> 32)
1043 << "\t" << TAI->getCommentString()
1044 << " Double-word most significant word " << Val << "\n";
1045 O << TAI->getData32bitsDirective() << unsigned(Val)
1046 << "\t" << TAI->getCommentString()
1047 << " Double-word least significant word " << Val << "\n";
1049 O << TAI->getData32bitsDirective() << unsigned(Val)
1050 << "\t" << TAI->getCommentString()
1051 << " Double-word least significant word " << Val << "\n";
1052 O << TAI->getData32bitsDirective() << unsigned(Val >> 32)
1053 << "\t" << TAI->getCommentString()
1054 << " Double-word most significant word " << Val << "\n";
1058 } else if (const ConstantVector *CP = dyn_cast<ConstantVector>(CV)) {
1059 const VectorType *PTy = CP->getType();
1061 for (unsigned I = 0, E = PTy->getNumElements(); I < E; ++I)
1062 EmitGlobalConstant(CP->getOperand(I), false);
1067 const Type *type = CV->getType();
1068 printDataDirective(type);
1069 EmitConstantValueOnly(CV);
1074 AsmPrinter::EmitMachineConstantPoolValue(MachineConstantPoolValue *MCPV) {
1075 // Target doesn't support this yet!
1079 /// PrintSpecial - Print information related to the specified machine instr
1080 /// that is independent of the operand, and may be independent of the instr
1081 /// itself. This can be useful for portably encoding the comment character
1082 /// or other bits of target-specific knowledge into the asmstrings. The
1083 /// syntax used is ${:comment}. Targets can override this to add support
1084 /// for their own strange codes.
1085 void AsmPrinter::PrintSpecial(const MachineInstr *MI, const char *Code) {
1086 if (!strcmp(Code, "private")) {
1087 O << TAI->getPrivateGlobalPrefix();
1088 } else if (!strcmp(Code, "comment")) {
1089 O << TAI->getCommentString();
1090 } else if (!strcmp(Code, "uid")) {
1091 // Assign a unique ID to this machine instruction.
1092 static const MachineInstr *LastMI = 0;
1093 static const Function *F = 0;
1094 static unsigned Counter = 0U-1;
1096 // Comparing the address of MI isn't sufficient, because machineinstrs may
1097 // be allocated to the same address across functions.
1098 const Function *ThisF = MI->getParent()->getParent()->getFunction();
1100 // If this is a new machine instruction, bump the counter.
1101 if (LastMI != MI || F != ThisF) {
1108 cerr << "Unknown special formatter '" << Code
1109 << "' for machine instr: " << *MI;
1115 /// printInlineAsm - This method formats and prints the specified machine
1116 /// instruction that is an inline asm.
1117 void AsmPrinter::printInlineAsm(const MachineInstr *MI) const {
1118 unsigned NumOperands = MI->getNumOperands();
1120 // Count the number of register definitions.
1121 unsigned NumDefs = 0;
1122 for (; MI->getOperand(NumDefs).isRegister() && MI->getOperand(NumDefs).isDef();
1124 assert(NumDefs != NumOperands-1 && "No asm string?");
1126 assert(MI->getOperand(NumDefs).isExternalSymbol() && "No asm string?");
1128 // Disassemble the AsmStr, printing out the literal pieces, the operands, etc.
1129 const char *AsmStr = MI->getOperand(NumDefs).getSymbolName();
1131 // If this asmstr is empty, just print the #APP/#NOAPP markers.
1132 // These are useful to see where empty asm's wound up.
1133 if (AsmStr[0] == 0) {
1134 O << TAI->getInlineAsmStart() << "\n\t" << TAI->getInlineAsmEnd() << "\n";
1138 O << TAI->getInlineAsmStart() << "\n\t";
1140 // The variant of the current asmprinter.
1141 int AsmPrinterVariant = TAI->getAssemblerDialect();
1143 int CurVariant = -1; // The number of the {.|.|.} region we are in.
1144 const char *LastEmitted = AsmStr; // One past the last character emitted.
1146 while (*LastEmitted) {
1147 switch (*LastEmitted) {
1149 // Not a special case, emit the string section literally.
1150 const char *LiteralEnd = LastEmitted+1;
1151 while (*LiteralEnd && *LiteralEnd != '{' && *LiteralEnd != '|' &&
1152 *LiteralEnd != '}' && *LiteralEnd != '$' && *LiteralEnd != '\n')
1154 if (CurVariant == -1 || CurVariant == AsmPrinterVariant)
1155 O.write(LastEmitted, LiteralEnd-LastEmitted);
1156 LastEmitted = LiteralEnd;
1160 ++LastEmitted; // Consume newline character.
1161 O << "\n"; // Indent code with newline.
1164 ++LastEmitted; // Consume '$' character.
1168 switch (*LastEmitted) {
1169 default: Done = false; break;
1170 case '$': // $$ -> $
1171 if (CurVariant == -1 || CurVariant == AsmPrinterVariant)
1173 ++LastEmitted; // Consume second '$' character.
1175 case '(': // $( -> same as GCC's { character.
1176 ++LastEmitted; // Consume '(' character.
1177 if (CurVariant != -1) {
1178 cerr << "Nested variants found in inline asm string: '"
1182 CurVariant = 0; // We're in the first variant now.
1185 ++LastEmitted; // consume '|' character.
1186 if (CurVariant == -1) {
1187 cerr << "Found '|' character outside of variant in inline asm "
1188 << "string: '" << AsmStr << "'\n";
1191 ++CurVariant; // We're in the next variant.
1193 case ')': // $) -> same as GCC's } char.
1194 ++LastEmitted; // consume ')' character.
1195 if (CurVariant == -1) {
1196 cerr << "Found '}' character outside of variant in inline asm "
1197 << "string: '" << AsmStr << "'\n";
1205 bool HasCurlyBraces = false;
1206 if (*LastEmitted == '{') { // ${variable}
1207 ++LastEmitted; // Consume '{' character.
1208 HasCurlyBraces = true;
1211 const char *IDStart = LastEmitted;
1214 long Val = strtol(IDStart, &IDEnd, 10); // We only accept numbers for IDs.
1215 if (!isdigit(*IDStart) || (Val == 0 && errno == EINVAL)) {
1216 cerr << "Bad $ operand number in inline asm string: '"
1220 LastEmitted = IDEnd;
1222 char Modifier[2] = { 0, 0 };
1224 if (HasCurlyBraces) {
1225 // If we have curly braces, check for a modifier character. This
1226 // supports syntax like ${0:u}, which correspond to "%u0" in GCC asm.
1227 if (*LastEmitted == ':') {
1228 ++LastEmitted; // Consume ':' character.
1229 if (*LastEmitted == 0) {
1230 cerr << "Bad ${:} expression in inline asm string: '"
1235 Modifier[0] = *LastEmitted;
1236 ++LastEmitted; // Consume modifier character.
1239 if (*LastEmitted != '}') {
1240 cerr << "Bad ${} expression in inline asm string: '"
1244 ++LastEmitted; // Consume '}' character.
1247 if ((unsigned)Val >= NumOperands-1) {
1248 cerr << "Invalid $ operand number in inline asm string: '"
1253 // Okay, we finally have a value number. Ask the target to print this
1255 if (CurVariant == -1 || CurVariant == AsmPrinterVariant) {
1260 // Scan to find the machine operand number for the operand.
1261 for (; Val; --Val) {
1262 if (OpNo >= MI->getNumOperands()) break;
1263 unsigned OpFlags = MI->getOperand(OpNo).getImm();
1264 OpNo += (OpFlags >> 3) + 1;
1267 if (OpNo >= MI->getNumOperands()) {
1270 unsigned OpFlags = MI->getOperand(OpNo).getImm();
1271 ++OpNo; // Skip over the ID number.
1273 if (Modifier[0]=='l') // labels are target independent
1274 printBasicBlockLabel(MI->getOperand(OpNo).getMBB(),
1275 false, false, false);
1277 AsmPrinter *AP = const_cast<AsmPrinter*>(this);
1278 if ((OpFlags & 7) == 4 /*ADDR MODE*/) {
1279 Error = AP->PrintAsmMemoryOperand(MI, OpNo, AsmPrinterVariant,
1280 Modifier[0] ? Modifier : 0);
1282 Error = AP->PrintAsmOperand(MI, OpNo, AsmPrinterVariant,
1283 Modifier[0] ? Modifier : 0);
1288 cerr << "Invalid operand found in inline asm: '"
1298 O << "\n\t" << TAI->getInlineAsmEnd() << "\n";
1301 /// printImplicitDef - This method prints the specified machine instruction
1302 /// that is an implicit def.
1303 void AsmPrinter::printImplicitDef(const MachineInstr *MI) const {
1304 O << "\t" << TAI->getCommentString() << " implicit-def: "
1305 << TRI->getAsmName(MI->getOperand(0).getReg()) << "\n";
1308 /// printLabel - This method prints a local label used by debug and
1309 /// exception handling tables.
1310 void AsmPrinter::printLabel(const MachineInstr *MI) const {
1311 O << TAI->getPrivateGlobalPrefix()
1312 << "label" << MI->getOperand(0).getImm() << ":\n";
1315 void AsmPrinter::printLabel(unsigned Id) const {
1316 O << TAI->getPrivateGlobalPrefix() << "label" << Id << ":\n";
1319 /// printDeclare - This method prints a local variable declaration used by
1321 /// FIXME: It doesn't really print anything rather it inserts a DebugVariable
1322 /// entry into dwarf table.
1323 void AsmPrinter::printDeclare(const MachineInstr *MI) const {
1324 int FI = MI->getOperand(0).getIndex();
1325 GlobalValue *GV = MI->getOperand(1).getGlobal();
1326 MMI->RecordVariable(GV, FI);
1329 /// PrintAsmOperand - Print the specified operand of MI, an INLINEASM
1330 /// instruction, using the specified assembler variant. Targets should
1331 /// overried this to format as appropriate.
1332 bool AsmPrinter::PrintAsmOperand(const MachineInstr *MI, unsigned OpNo,
1333 unsigned AsmVariant, const char *ExtraCode) {
1334 // Target doesn't support this yet!
1338 bool AsmPrinter::PrintAsmMemoryOperand(const MachineInstr *MI, unsigned OpNo,
1339 unsigned AsmVariant,
1340 const char *ExtraCode) {
1341 // Target doesn't support this yet!
1345 /// printBasicBlockLabel - This method prints the label for the specified
1346 /// MachineBasicBlock
1347 void AsmPrinter::printBasicBlockLabel(const MachineBasicBlock *MBB,
1350 bool printComment) const {
1352 unsigned Align = MBB->getAlignment();
1354 EmitAlignment(Log2_32(Align));
1357 O << TAI->getPrivateGlobalPrefix() << "BB" << getFunctionNumber() << "_"
1358 << MBB->getNumber();
1361 if (printComment && MBB->getBasicBlock())
1362 O << '\t' << TAI->getCommentString() << ' '
1363 << MBB->getBasicBlock()->getName();
1366 /// printPICJumpTableSetLabel - This method prints a set label for the
1367 /// specified MachineBasicBlock for a jumptable entry.
1368 void AsmPrinter::printPICJumpTableSetLabel(unsigned uid,
1369 const MachineBasicBlock *MBB) const {
1370 if (!TAI->getSetDirective())
1373 O << TAI->getSetDirective() << ' ' << TAI->getPrivateGlobalPrefix()
1374 << getFunctionNumber() << '_' << uid << "_set_" << MBB->getNumber() << ',';
1375 printBasicBlockLabel(MBB, false, false, false);
1376 O << '-' << TAI->getPrivateGlobalPrefix() << "JTI" << getFunctionNumber()
1377 << '_' << uid << '\n';
1380 void AsmPrinter::printPICJumpTableSetLabel(unsigned uid, unsigned uid2,
1381 const MachineBasicBlock *MBB) const {
1382 if (!TAI->getSetDirective())
1385 O << TAI->getSetDirective() << ' ' << TAI->getPrivateGlobalPrefix()
1386 << getFunctionNumber() << '_' << uid << '_' << uid2
1387 << "_set_" << MBB->getNumber() << ',';
1388 printBasicBlockLabel(MBB, false, false, false);
1389 O << '-' << TAI->getPrivateGlobalPrefix() << "JTI" << getFunctionNumber()
1390 << '_' << uid << '_' << uid2 << '\n';
1393 /// printDataDirective - This method prints the asm directive for the
1395 void AsmPrinter::printDataDirective(const Type *type) {
1396 const TargetData *TD = TM.getTargetData();
1397 switch (type->getTypeID()) {
1398 case Type::IntegerTyID: {
1399 unsigned BitWidth = cast<IntegerType>(type)->getBitWidth();
1401 O << TAI->getData8bitsDirective();
1402 else if (BitWidth <= 16)
1403 O << TAI->getData16bitsDirective();
1404 else if (BitWidth <= 32)
1405 O << TAI->getData32bitsDirective();
1406 else if (BitWidth <= 64) {
1407 assert(TAI->getData64bitsDirective() &&
1408 "Target cannot handle 64-bit constant exprs!");
1409 O << TAI->getData64bitsDirective();
1413 case Type::PointerTyID:
1414 if (TD->getPointerSize() == 8) {
1415 assert(TAI->getData64bitsDirective() &&
1416 "Target cannot handle 64-bit pointer exprs!");
1417 O << TAI->getData64bitsDirective();
1419 O << TAI->getData32bitsDirective();
1422 case Type::FloatTyID: case Type::DoubleTyID:
1423 case Type::X86_FP80TyID: case Type::FP128TyID: case Type::PPC_FP128TyID:
1424 assert (0 && "Should have already output floating point constant.");
1426 assert (0 && "Can't handle printing this type of thing");